.tit-box {
    line-height: 105/7.5vw;
    span {
        float: left;
        width: 5/7.5vw;
        height: 35/7.5vw;
        background: #d43c33;
        margin: 35/7.5vw 0 0 0;
    }
    em {
        float: left;
        margin: 0 0 0 13/7.5vw;
        font-size: 35/7.5vw;
        
    }
}